Because wind farms tend to be built on uplands, where there are good thermals, they kill a disproportionate number of raptors. In Australia, the Tasmanian wedge-tailed eagle is threatened with global extinction by wind farms. In north America, wind farms are killing tens of thousands of raptors including golden eagles and America’s national bird, the bald eagle. In Spain, the Egyptian vulture is threatened, as too is the Griffon vulture — 400 of which were killed in one year at Navarra alone. Norwegian wind farms kill over ten white-tailed eagles per year and the population of Smøla has been severely impacted by turbines built against the opposition of ornithologists.